Last Night's Look: Love It or Leave It?We can't stop talking about the outfits Katy Perry, Jessica Biel and more stars were just spotted in! Check them out, then vote – fashion-forward or fashion fail?

HILARY DUFF

In theory, a red bowler hat doesn't exactly sound chic, but in practice, we have to admit it works. Hilary wears her topper with a black cardigan and leather leggings to a signing of her new book, True, in La Verne, Calif.



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